Hollow shaft having drive elements with axially varied material properties being secured on the hollow shaft by expansion of the hollowshaft
CA 1287227 C · Owner: Uni-Cardan Ag · Inventors: Swars, Helmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
All assembly includes a hollow shaft and drive elements partly formed of brittle material. The drive elements include as, viewed in axial succession, first regions containing material of relatively low ductility and second regions containing material or relatively high ductility. I'he hollow shaft has expanded sections opposite the second regions securing che drive elements on the hollow shaft.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.